So I have read a few threads ont he A/C and it seems that many say that ECO mode gives better MPG, but at what cost? Has anyone tried to determien the impact of ECO mode? And what exactly is ECO mode doing differently? I ask becasue I liek the interior temp cool. I typically leave my temp on LO and vary the fan speed. I have a TCH coming next week and am concerned that I may have to sacrifice comfort for MPG. My goal is to get at least 30-32 MPG consitently. In ATL the humidity is a killer, i will have tinted windows. I drive 18 miles each way to work in varied 40-60 MPH driving. Even in the AM the A/C is often needed for dehumidification, in the PM it needs to really crank for a while to get my cars comfortable, then I typically clcik the fan speend down to 3 out of 7, but leave the temp on LO. I use the recycle setting 95%. Are my expectations of 32MPG and a cool cabin unrealistic?